It only working when You're in browsing internet (online).
Go to menu---> ''Settings'' ---> ''Connectivity'' ---> ''Connection manager'' , Click the connection : there will be. Some useful information such as : the status of connection, total of sent and received data, the download speed , the upload speed , and the info of which application uses the connection.
Go to menu---> ''Settings'' ---> ''Connectivity'' ---> ''Connection manager'' , Click the connection : there will be. Some useful information such as : the status of connection, total of sent and received data, the download speed , the upload speed , and the info of which application uses the connection.